<template>
	<view>
		<view class="search-box">
			<uni-search-bar @input="input" :radius="100" cancelButton="none">
			</uni-search-bar>
			<view class="sugg-list" v-if="searchResults.length !== 0">
				<view class="sugg-item" v-for="(item,i) in searchResults" :key="i" @click="gotoDetail(item.goods_id)">
					<view class="goods-name">{{item.goods_name}}</view>
					<uni-icons type="right" size="20"></uni-icons>
				</view>
			</view>
			<view class="history-box" v-else>
				<view class="history-title">
					<text>搜索历史</text>
					<uni-icons @click="clearHistory" type="trash" size="17"></uni-icons>
				</view>
				<view class="history-list">
					<uni-tag @click="gotoGoodsList(item)" :inverted="true" :text="item" v-for="(item,i) in histories" :key="i"></uni-tag>
				</view>
			</view>
		</view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				timer: null,   
				kw: '',
				searchResults:[],
				historyList:[]
			};
		},
		computed:{
			histories(){
				return [...this.historyList].reverse()
			}
		},
		onLoad() {
			this.historyList=JSON.parse(uni.getStorageSync('kw')||'[]')
		},
		methods: {
			input(e) {
				clearTimeout(this.timer)
				this.timer = setTimeout(() => {
					this.kw = e
					this.getSearchList()
				}, 500)
			},
			async getSearchList(){
				if(this.kw.length === 0){
					this.searchResults = [];
					return
				}
				const {data:res}=await uni.get('/api/public/v1/goods/qsearch',{query:this.kw})
				if(res.meta.status!==200) return uni.$showMsg()
				this.searchResults = res.message
				this.saveSearchHistory()
			},
			gotoDetail(goods_id){
				uni.navigateTo({
					url:'/subpkg/goods_detail/goods_detail?goods_id='+goods_id
				})
			},
			saveSearchHistory(){
				const set = new Set(this.historyList)
				set.delete(this.kw)
				set.add(this.kw)
				this.historyList = Array.from(set)
				uni.setStorageSync('kw',JSON.stringify(this.historyList))
			},
			clearHistory(){
				this.historyList=[],
				uni.setStorageSync('kw','[]')
			},
			gotoGoodsList(kw){
				uni.navigateTo({
					url:'/subpkg/goods_list/goods_list?query='+kw
				})
			}
		}
	}
</script>

<style lang="scss">
	.search-box {
		position: sticky;
		top: 0;
		z-index: 999;
		.sugg-list{
			padding: 0 5px;
			.sugg-item{
				font-size: 12px;
				padding: 13px 0;
				border-bottom: 1px solid #efefef;
				display: flex;
				align-items: center;
				justify-content: space-between;
				.goods-name{
					white-space: nowrap;
					overflow: hidden;
					text-overflow: ellipsis;
					margin-left: 3px;
				}
			}
		}
	}
	.history-box{
		padding: 0 5px;
		.history-title{
			display: flex;
			justify-content: space-between;
			height: 40px;
			align-items: center;
			font-size: 13px;
			border-bottom: 1px solid #efefef;
		}
		.history-list{
			uni-tag{
				margin-top: 5px;
				margin-right: 5px;
			}
		}
	}
</style>